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AR-180 Inspired Complete Upper Receivers

NEW:BRN-180S

10.5" Barrel

Adjustable Gas Block

BRN-180 Adjustable Gas Block

For suppressed or unsuppressed shooting.

Brownells BRN-180S Short Barrel Upper

BRN-180

16" Barrel

Brownells BRN-180 Upper

Upper Receiver Overview

The new Brownells BRN-180™ and BRN-180S™, designed in conjunction with PWS & FM Products, incorporate many of the AR-18/AR-180 improvements - including the robust and reliable gas piston operating system. Key features include:

  • BRN-180™ has 16" barrel with matte black Nitride finish
  • BRN-180S™ has 10.5" barrel with matte black Nitride finish
  • Ultra-reliable AR-180 piston operating system
  • Compatible with current mil-spec AR-15 lowers
  • Machined 7075 T6 aluminum receiver & handguard - hardcoat anodized finish
  • .223 Wylde chamber
  • Button rifled bore; 1-8" twist
  • 1/2"-28 threaded muzzle
  • Replica 3-prong AR-180 flash suppressor
  • Molded polymer ejection port cover

The BRN-180™ and 180S™ upper receivers are fully compatible with any standard, mil-spec AR-15 lower receiver. Add one to your collection today.

Common Feature:

Action Type:

Gas Piston

Twist Rate:

1:8

Chambered:

.223 Wylde

Finish:

Anodized Black

Muzzle:

3 Prong Flash Hider

BRN-180S™ Specific:

Gasblock:

Adjustable

Barrel Length:

10.5"

Length:

18.57 inches

Weight:

4 lbs

BRN-180™ Specific:

Barrel Length:

16"

Length:

24.57 inches

Weight:

4.65 lbs

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Model: BRN-180™ Details

BRN-180 On Folding Stock Lower BRN-180 On No Buffer Lower BRN-180 On BRN-4 Lower BRN-180 On Fixed Rifle Length Lower

Designed To Fit Mil-Spec AR-15 Lowers: The BRN-180™ is a complete, plug-and-play upper assembly that drops onto any standard AR-15 lower.

BRN-180 Gas System

Short Stroke Gas Piston: Designed for maximum reliability, the short-stroke gas piston keeps fouling out of the receiver and lets the bolt run cool and clean. The BRN-180S™ has a fully-adjustable gas block for shooting either suppressed or unsuppressed.

BRN-180 Carrier

Bolt Carrier & Recoil Guide Rods: True to the original, the bolt carrier rides on twin recoil guide rods for a smooth, light recoil impulse. The recoil system is completely self-contained in the upper.

BRN-180 Bolt Detail

Bolt: The BRN-180™ bolt features a Nickel Teflon coating, for smooth operation and ease of cleaning. Classic multi-lug rotating bolt ensures reliability and a repeatable lockup.

BRN-180S Flash Hider

Flash Hider: The 3-prong flash hider gives an authentic look, while also effectively reducing both muzzle flash and rise. The closed bottom reduces the amount of dirt and debris kicked up by the muzzle blast.

Adjustable Gas Block: The BRN-180S™ features an adjustable gas block for suppressed or unsuppressed shooting.

BRN-180 On Folded AR-15

Folding Stock Or Folding Brace: With the recoil assembly contained in the upper, there is no need for an AR-15-style buffer and spring. The BRN-180™ and 180S™ readily accept many kinds of folding stocks or braces, and both can be fired in the folded position.

Model: BRN-180™ Around The Web

Model: BRN-180 & BRN-180S Aditional Images

BRN-180 Right Side BRN-180 Left Side BRN-180 Angled Forward BRN-180 Angled Back BRN-180 Flash Hider BRN-180 Under Side BRN-180 Disassembled BRN-180S Right Side BRN-180S Left Side BRN-180S Angled Forward BRN-180S Angled Back BRN-180S Flash Hider BRN-180S Under Side BRN-180S Disassembled Charging Handle Bolt Carrier Group Bolt Carrier Group Back Side Bolt Back Bolt Front Bolt And Rails

Click Image Above To Open Expanded View

BRN-180 Right Side
BRN-180 Left Side
BRN-180 Angled Forward
BRN-180 Angled Back
BRN-180 Flash Hider
BRN-180 Under Side
BRN-180 Disassembled
BRN-180S Right Side
BRN-180S Left Side
BRN-180S Angled Forward
BRN-180S Angled Back
BRN-180S Flash Hider
BRN-180S Under Side
BRN-180S Under Side
Charging Handle
Bolt Carrier Group
Bolt Carrier Group Back Side
Bolt Back
Bolt Front
Bolt And Rails
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